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Cerium(III) Pivalate [Ce(Piv)3(HPiv)3]2: Synthesis, Crystal Structure, and Thermal Stability

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Abstract

The [Ce(Piv)3(HPiv)3]2 complex was synthesized by reacting cerium(III) nitrate with NH4(Piv) (1 : 4) (HPiv is pivalic acid) in an aqueous solution and by further recrystallization of the obtained precipitate from a 5% HPiv solution in n-hexane. The complex structure and unit cell parameters were determined by X-ray diffraction analysis: a = 16.586(8) Å, b = 12.313(5) Å, c = 20.765(10) Å, β = 109.27(2)°, V = 4003(2) Å3, Z = 4, R = 0.0546, R w = 0.0836, space group P21/n. The crystal structure of [Ce(Piv)3(HPiv)3]2 consists of centrosymmetric dimeric molecules with the Ce(III) atoms bound by four bridging pivalate ligands. Heating in an atmosphere of nitrogen is accompanied by the elimination of six HPiv molecules in the range of 90–190°C; the thermolysis of the obtained Ce(Piv)3 occurs at 290–450°C. In addition to the thermal decomposition, the sublimation of Ce(Piv)3 was also observed under reduced pressure (0.01 mmHg) in the temperature interval of 290–350°C.

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  1. Moscow State University, Vorob'evy gory, Moscow, 119899, Russia

    M. Yu. Khudyakov, N. P. Kuz'mina, A. P. Pisarevskii & L. I. Martynenko

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  1. M. Yu. Khudyakov
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  2. N. P. Kuz'mina
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  3. A. P. Pisarevskii
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  4. L. I. Martynenko
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Khudyakov, M.Y., Kuz'mina, N.P., Pisarevskii, A.P. et al. Cerium(III) Pivalate [Ce(Piv)3(HPiv)3]2: Synthesis, Crystal Structure, and Thermal Stability. Russian Journal of Coordination Chemistry 28, 521–525 (2002). https://doi.org/10.1023/A:1016261530441

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  • DOI: https://doi.org/10.1023/A:1016261530441

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